When we bought our place 5-6 years ago, it came with a pool ...(yippee I thought) but I didn't realise how expensive it was to look after a large pond in the garden.
Knowing very little about swimming pools except they look good and inviting (well on the telly they do), I was amazed at the number of issues we have had.
For the last 2-3 years we have had to replace the whole water as this gives me a chance to karture the pool walls and floor. It appears that lime scale is on the pool and that also appears to give algae and things something to hang on to so you can not 'brush' it off. The karturing doesn't appear to get it all off (or maybe I get bored of karturing for a whole day !)
So how can you remove the lime scale and stop it coming back with draining the pool and not having a massive water softener attached !